Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa8c6c83cd106b3d…

MALICIOUS

PDF

41.9 KB Created: 2020-11-08 05:43:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-06
MD5: 7604731a5d3ce908ee12cd942219a9be SHA-1: 30cb7e2e41e8a54ab2943052811e00444b8e4816 SHA-256: aa8c6c83cd106b3d8d206d9d7a2119376b6b7af7913ba70ce1496e5eb63ba48a
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://trafffi.ru/123?keyword=adobe+creative+suite+2020+torrent PDF link annotation
    • https://fuwurugosudopo.weebly.com/uploads/1/3/4/3/134326966/8355591.pdfIn PDF document text
    • https://xenifopiri.weebly.com/uploads/1/3/4/5/134507673/3fe2ff9f819f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379237/normal_5f8bec9d9dd15.pdfIn PDF document text
    • https://lirebuzufosol.weebly.com/uploads/1/3/1/4/131453665/415964.pdfIn PDF document text
    • https://lubozukutiximik.weebly.com/uploads/1/3/4/4/134472848/1147765.pdfIn PDF document text
    • https://xuwirebusupedun.weebly.com/uploads/1/3/4/3/134379604/75d2017a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://vabavoresadi.files.wordpress.com/2020/11/debewasomogoro.pdfIn PDF document text
    • https://perilodisodu.files.wordpress.com/2020/11/nonviolent_communication_book.pdfIn PDF document text
    • https://s3.amazonaws.com/vovabagubajegeb/79722911007.pdfIn PDF document text
    • https://s3.amazonaws.com/leributafa/birthday_messages_to_a_daughter_from_mother.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e41ac29-ec34-4a33-ac90-8801eda21361/muganofaferali.pdfIn PDF document text
    • https://jazelowe.files.wordpress.com/2020/11/86181311434.pdfIn PDF document text
    • https://s3.amazonaws.com/pasawexawinogad/61615702751.pdfIn PDF document text
    • https://lifabetedo.files.wordpress.com/2020/11/gapozuxop.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/tamilnadu_anganwadi_recruitment_2019_application_form.pdfIn PDF document text
    • https://s3.amazonaws.com/daniwodug/gejogalevu.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000061cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61CF 5364 bytes
SHA-256: f62fec0dabb01768f3084220b82dc82cc658c36438c71483e6c860f4799c5a65
font_01_sfnt_off0000741d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x741D 12228 bytes
SHA-256: 42f58f2c31feb63a2bcc0d72a64265fe2198319821263f8fba7bf6d751d90784